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Capstone · Grades 7–9 Keystones #171 20 June 2026 Skills week 4 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 20 June 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing in standard form

    Divide: 3.2 × 106 ÷ 5.2 × 106

    Answer: 6.15 × 10-1
  2. 2. Algebra Solving non-monic quadratics

    Solve: 2x² + 8x + 6 = 0

    Answer: x = -1 or x = -3
  3. 3. Geometry SOHCAHTOA — missing angle

    Adjacent = 26cm, hypotenuse = 41cm. Find the angle

    Answer: 50.6°
  4. 4. Ratio Mixed ratio problems

    In ratio 3:3:1, what fraction is the second part?

    Answer: 3⁄7
  5. 5. Statistics Median

    Find the median of: 60, 56, 43, 20, 34, 35, 24, 68, 65, 62, 60

    Answer: 56

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